Transformer cut-out.



No. 781,340. PATENTED JAN 31 1905, J. P. HETHBRINGTON (i/2 L. E GRUBBS. TRANSFORMER CUT-OUT.

APPLIOATION FILED 1030.23, 1903.

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Noi 781,340. PATENTED JAN. 31, 1905. J. P. HETHERINGTON & L. E. GRUBBS.

TRANSFORMER GUT-OUT.

APPLIOATION FILED D3018, 1903.

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UNITED STATES i Patented January 31, 1905.

PATENT OEEIcE.

JOHN P. HETHERINGTON AND LEWIS E. GRUBBS, OF LOGANSPORT, INDIANA; SAID GRUBBS ASSIGNOR TO SAID l-IETHERINGTON.

TRANSFORMER CUT-OUT.

SPECIFICATION forming part of Letters Patent No. 781,340, dated January 31, 1905.

A li ti fil d December 28, 1903. Serial No, 186,911.

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Be it known that we, JOHN P. HETHERING- TON and Lewis E. GRUBBs, citizens of the United States, residing at Logansport, in the county of Cass, State of Indiana, have invented a new and useful Transformer Cut-Out, of which the following is a specification.

Our invention relates to an improvement in the form of a transformer cut-out to be used by electrical power or lighting plants. It is well known that the present transformers are wasteful, inasmuch as there is the same internal transformer-core loss when the lights are turned off as when the lights are burning.

The object of our invention is to provide a device which will automatically cut the transformer in or entirely out of circuit when the lights or power is turned on or off. We attain this object by mechanism illustrated in the accompanying drawings.

Similar numerals refer to similar throughout the several views.

Figure 1 is a view showing the transformer out of service. Fig. 2 is a view showing the transformer thrown into service. Fig. 3 is a View showing the transformer going out of service. Fig. 4 is a section on the line F F of Fig. 3. Fig. 5 is a section on the line H II of Fig. 3. Fig. 6 is a section on the line GG of Fig. 1.

The following is an explanation of our transformer cut-out.

Lines 1 and 2 are the primary wires. The current passes along line 1 through a small transformer or a resistance-coil 3 and switch 1 to motor A, out the latter on wire 13, to and along line 5, through secondary service-wire 23. and back through 24 to line 6, switch 7, and resistance-coil 8 to line 2.

The action of the current passing through the wires and motor as described above completes a circuit and causes the motor to revolve, thereby opening switches L and 7 and closing switches 9, 10, and 11, as shown in Fig. 2. The motor A in addition to closing the switches 9, 10, and 11 cuts off its own current by opening switches 4L and 7 Switches 9, 10, and 11 being closed, as shown in Fig. 2, the current passes along line parts 1 via switch and line 21 through the transformer C to line 22, via switch 9, to line 2. Inasmuch as there is now a current in the transformer C, the secondary wire 14: receives its current induction in the transformer. The current passes on line let via switch 11 to line 5, thence to secondary service-wire 23, and back through 2A to line 16, magnet D, and back to transformer via line 15. The core of the magnet becoming magnetized by the current causes the metal piece 19 to be lifted from point 20. During the time the current is making the above circuit the lights are burning. hen the lights are extinguished, thereby putting line 23 and 24 out of service, the magnet becomes demagnetized, allowing metal piece 19 to come in contact with point on line 15, as shown in Fig. 3. This causes a current to pass from line 11 via switch 11, through line 18 to motor A, reversing the motor and passing onto line 17, through metal piece 19 to point 20, and along line 15 back to the transformer, completing another circuit via motor A. The circuit being completed, the current causes a reversed motion in the motor A, which results in the switches 9, 10, and 11 being opened and the switches 4E and 7 being closed, thereby throwing the transformer, lights, and motor entirely out of service and again setting switches 4c and 7 in the position occupied in the beginning of this description.

25 is the switch-shaft, while 26 are stops and 27 an arm on said shaft cooperating with said stops to limit the motion of the shaft and prevent the switches passing the contactpoint.

hat we claim as our invention, and desire to secure by Letters Patent, is-

1. The combination with a transformer, of a motor, an electromagnet, its armature, the primary wires, resistances, one for each of said primary wires, switches operatively connected with the motor, and connections between said transformor and magnet.

2. The combination with a transformer, of a motor, an electromagnet, its armature, the primary wires, a resistance for each of said primary wires, switches operatively connected with the motor, a secondary wire connect- I and means for magnetizing and demagnetiz- 10 ed with the motor, and connections between lng said magnet, all substantlally as and for said transformer and magnet. the purpose specified.

5. 1110 combination With a transtoimel, oi JOHN P. HETHERING'TON. a motor, an eieetromagnet, its armature, the LEW is E primary wires, a secondary wire, a resistance D for each of said primary wires, switches op- WVitnesses: eratively connected with the motor, eonnec- HENRY KLINGK,

tions between the transformer and magnet ANNA E. BALL. 

